Instructions for: Field Flaring OF RESISTOFLEX

Instructions for:

Field Flaring OF RESISTOFLEX®

PTFE, PVDF, ETFE, and PP Lined Pipe with our Universal Field Flare Tooling

Fabrication should be performed only by trained personnel liners. Resistoflex field flare pipe can also be fitted with lap
according to the instructions and procedures outlined herein. joint flanges through the use of “Conrac” machines
manufactured by Conrac Corporation, Division of PHI, City of
Resistoflex supplies schedule 40 steel pipe lined with four Industry, California. Additional instructions for field fabrication
different liner materials: PTFE (Teflon* and Fluon*), PVDF of HIF and Serra-Seal are also available separately.
(Kynar*), ETFE (Tefzel*), and Polypropylene. Resistoflex lined
pipe can be supplied completely fabricated at the factory to the It is important that the procedures and techniques
customer’s specified length, ready for installation. However, if described herein be carefully adhered to, in order to
the user is unable to determine in advance what specific achieve full performance capabilities of the finished
lengths are required for various spool pieces, he can obtain assembly. Deviation from the prescribed procedures may
Resistoflex field flare pipe and fabricate it to length at the job result in unsatisfactory service life, failure or personnel
site. Maximum length is 20 feet, 1”–6” diameter for PTFE, and/or equipment hazard.
PVDF, ETFE, and PP. These field flared pipe spools can be
used with the Resistoflex factory-made pipe spools and fittings
described in the Resistoflex Design and Layout Manual.

This bulletin contains instructions for field flaring of liners in
Resistoflex schedule 40 pipe spools made with threaded or
lap joint flanges and containing PTFE, ETFE, PVDF, and PP

*Kynar is an Elf Atochem Trademark
*Teflon is a Registered Trademark of DuPont
*Fluon is a Registered Trademark of ICI
*Tefzel is a Registered Trademark of DuPont

1

FF-8U

What’s Required

1. Resistoflex Field Flare Pipe and Resistoflex Ductile Iron Socket Threaded Flanges (ANSI Class 150).

Resistoflex field flare pipe can be fitted with welded slip-on or socket weld flanges. Field flare pipe can also be fitted with lap joint flanges
using Conrac machines.

ITEM DESCRIPTION PART NUMBER*

Fluoroflex® -T (PTFE) Heavy Duty Lined Pipe (for 10 foot length)
Fluoroflex-K (PVDF) (Kynar) Heavy Duty Lined Pipe
Polypropylene Heavy Duty Lined Pipe R6101FFXXX-1200
Tefzel® (ETFE) Heavy Duty Lined Pipe
Ductile Iron, Socket Threaded Flange K3101FFXXX-1200

P2101FFXXX-1200

Z6101FFXXX-1200

R60451D1-XXX**

XXX–Nominal pipe size given in 1/16ths of an inch; e.g., 2” head must be heated to a precise temperature and held
pipe is 032. Lengths of standard field flare pipe is sufficient there while the liner is being heated. For this reason the
to make 10’, 15’ or 20’ flared pipe spools. infinitely variable hot plate (R25750-LHP) should be used.
This hot plate will hold a flaring head at a specified
*For field flare pipe with a factory made lap joint flange at one temperature; however, heat-up time is longer than with the
end, change FF in part number to FV. hot plate having 4-fixed settings (R25750-HDP). Hence, the
latter is recommended for use with PTFE liners.
**If flanges other than Resistoflex supplied flanges are used,
for threaded or welded configurations, insure that the radius To decrease heat-up time when flaring PVDF, ETFE, or PP,
from bore to face of flange is generous. The radius should the gas stove can be used to raise the flaring head to the
be 1/4” in 1”-2”, 5/16” in 3”, and 3/8” in larger sizes. It is prescribed temperature, after which the head can be
against this radius you will be field flaring the plastic liner so it transferred to the preheated infinitely variable hot plate for
should be clean and burr free. See note 2 on page 11 maintenance of the required temperature.
regarding radius on steel pipe flare.
The table on page 8 gives approximate heat-up times for
2. Resistoflex Universal Field Flaring Tool Kits. liners, pipe sizes and heating equipment.

Tools necessary for flaring all PTFE, PVDF, ETFE, and PP Hot Air Gun (Used with PVDF, ETFE, and PP Lined Pipe)
liners in pipe, sizes 1” thru 4”, are contained in Kit R29650M.
Supplemental tools for flaring liners in 6” size pipe are The 220 Volt Hot Air Gun, R29050-HG can be used for field
contained in Kit R29650S-096. Supplemental tools for flaring flaring 1”-10” Kynar®, Tefzel®, and Polypropylene lined pipe.
liners in 8” size pipe are contained in Kit R29650S-128. The 220 volt gun is furnished without a plug on the end of
Tooling for 10” size pipe is available in supplemental kit the cord. The user should add whatever plug will fit his
R29650S-160. For information on tooling and field flaring electrical receptacle.
techniques for 12” size pipe, please consult the factory.
4. Heat Resistant Gloves.
3. Heating Equipment.
Heat resistant gloves are furnished in Kit R29650M. They
Propane Gas Stove (R25750-GS) can also be ordered as separate items. The Resistoflex part
number is R28760-G.
Heavy Duty Hot Plate with Fixed Temperature Settings
(R25750-HDP) 5. Pipe Threading Equipment, Cutting Tools,
Reamer, Grinder, Files.
Hot Plate with Infinitely Variable Thermostatic Control
(R25750-LHP) (Required with PVDF lined pipe) 6. Protective Covers.

Heating equipment is not included in kit. It is an extra cost IMPORTANT: Instructions in this booklet are for PTFE,
option. PVDF, ETFE, and PP liners for schedule 40 pipe only.
Separate instructions are available for Serra-Seal®
Where an open flame is permissible, the use of the propane schedule 10 pipe lined with either FEP or PTFE, as well
gas stove (R25750-GS) provides the fastest approved as schedule 40 pipe lined with PTFE for the High Integrity
method for heating the flaring heads. Where an open flame Flange. Consult factory for appropriate instruction.
is prohibited, the heavy duty hot plate with 4 fixed
temperature settings (R25750-HDP) is recommended.

For flaring Heavy Duty PVDF, ETFE and PP, it is necessary to
heat the flaring head and to preheat the liner. The flaring

2

Part I

Field Flaring of PTFE Heavy Duty Lined Pipe

Preparation of Lined Pipe STEP 2

Note: Heating of the flaring heads can take place while the following Cut the lined steel pipe to length “L” minus dimension “B”
preparatory operations are being performed. See page 8 for heating (from table below) using an abrasive cut-off wheel, lathe
information. parting tool or power hacksaw. Cut must be square with as
little burr as possible. Do not use a pipe wheel or a tube
CAUTION cutter since these can deform the inside of the steel pipe.

The Thermalok© process custom fits each liner to its
housing; therefore liners must not be removed from their
original housings and indiscriminately used in other
housings. If a liner must be removed from its housing,
mark both the liner and the housing to assure the right liner
goes back into the housing from which it came. Further,
put the liner back in as soon as possible, otherwise it
could relax slightly and make reinsertion difficult.

STEP 1 PIPE SIZE B
Using the driving plug, push the liner along the steel pipe at
one end, until it projects out the other end a distance equal In. mm
to dimension “A” in the table below. (If the liner is difficult to
move, use ice, dry ice or some other cooling medium to 1" 13⁄16 21
contract the liner to facilitate its movement.)
11⁄2" 13⁄16 21
Driving plug in lined pipe with liner pushed back
2" 13⁄16 21

3" 13⁄16 21

4" 7⁄8 22

6" 15⁄16 24

8" 11⁄16 27

Values given in the table are accurate within approximately 1/16" or 2mm.

PIPE SIZE In. A
mm
1" 2 5⁄16
11⁄2" 2 7⁄16 59
2" 215⁄16 62
3" 215⁄16 75
4" 3 3⁄16 75
6" 3 11⁄16 81
8" 3 13⁄16 94
97

3

STEP 3 Note: Backing-off of flange must be done before thread sealant
Using the driving plug at the newly cut end, push the liner has had time to set up.
approximately 2” (50mm) farther along the steel pipe. Then
take a reamer or grinder and make a small radius on the STEP 6
inside edge of the steel pipe to eliminate any sharp corners Using the driving plug, push the liner along the flanged
or burrs at the newly cut end. pipe until it projects an equal amount at each end
(Dimension “C” in table below). Make certain that the cut
Note: Each assembly must have at least two vent holes, one at each ends of the liner are square and even. Failure to make a
end approximately 3” to 4” from the end. This distance will allow clean, square cut could result in a split of the liner during
flanging without obstructing the vent hole. To drill the holes, first push flaring. If necessary, use a sharp knife to trim from the end
the liner far enough back inside the already cut-to-length housing to of the liner any loose edges which may have resulted from
permit drilling the first hole safely. The hole diameter should be 3/32” the sawing or cutting operation.
(2.4mm) for pipe sizes through 4” and 5/32” (4mm) over 4”. Be sure
to deburr the hole inside the pipe and clean up any chips to
prevent damage to the liner when repositioning it in the
pipe. Repeat this operation at the opposite end.

STEP 4 PIPE SIZE C
In. mm
Thread the end of the pipe with either a straight pipe thread
(NPSM) or a tapered pipe thread (NPT). Keep the interior of 1" 13⁄16 21
the lined pipe free of oil. If a straight pipe thread is used, to 11⁄2" 7⁄8 22
prevent the flanges from rotating out of position, apply 2" 11⁄8 29
Loctite* thread sealant or equivalent to the pipe threads 3" 11⁄8 29
before putting on the flange. P/N/ R60451DI-XXX. Screw 4" 11⁄4 32
the flange onto the pipe and then use a wrench to fasten it 6" 11⁄2 38
securely. If a tapered pipe thread is used, the tapered 8" 19⁄16 40
threads must be sized so that the flange R60451DI-XXX can
be screwed wrench tight to within 1/16” (1.5mm) of the Next, use a coarse cut file to chamfer the outer edge of the
internal flange shoulder. liner to an angle of approximately 45º as shown in the
diagram. This chamfer will smooth out any notch left in the
Note: No step or offset is permitted on pipe ID where pipe end edge of the liner after cutting, thereby preventing splits that
and flange meet. Grind smooth if necessary. Insure all burrs and could occur during flaring.
chips are removed. Corner radius should be 1/4” in 1”-2”, 5/16”
in 3”, and 3/8” in larger sizes.

For instructions on welding flanges see bulletin FF-SP Sup.

STEP 5

Using the driving plug at the unflanged end, push the liner
back along the pipe until the end of the liner is at least two
inches inside the steel housing. Repeat the reaming,
threading and flange installation procedures in steps 3 and
4. Make certain flange bolt holes are properly aligned.
Flanges may be backed-off as much as 1/4 turn from the
fully bottomed position.

* Trade name Loctite Corp.

4

STEP 7 3” in size. The larger extension pipe is used in the handle of
the socket wrench when flaring pipe liners over 3”.)
(If the liner was cooled to facilitate movement during previous
steps, allow it to return to ambient temperature before STEP 8
proceeding with steps 7 and 8.) Remove the driving nut and
washer from the expander assembly, then place the special Heat the flaring head to the proper temperature as given in the
socket wrench over the adjusting nut. table on page 8. (To save time, heating of the flaring head can
take place while the previous seven steps are being
SOCKET performed.)
WRENCH
STEP 9
DRIVING NUT
WASHER Wearing the heat resistant gloves, place the heated flaring
head onto the support rod. Then place the washer and driving
INDEX GROOVE nut onto the rod. (Do not bring the flaring head into contact
SUPPORT with the liner extension until the washer and the driving nut are
ROD on the rod.) Next, take the special socket wrench and tighten
ADJUSTING the driving nut. This tightening will bring the hot flaring head
NUT into contact with the liner and the flaring process will have
begun. A smoother operation and more uniform flare will result
Expander assembly by using an extension pipe in the wrench handle as discussed
in Step 7 and with a cranking motion, advance the hot flaring
Insert this unit into the pipe so that the index groove on the head smoothly, steadily and without stopping, until the head
wrench is even with the end of the liner or a little into the liner. bottoms. This is indicated by a sudden noticeable increase in
Tighten the expander adjusting nut until the expander resistance. Then tighten 1/4 turn more. *Speed of flaring
assembly is locked tightly in the pipe. Be careful not to will be dictated by following the natural yield of the
misalign the expander or shift the liner. material as it softens against the flaring head. In some
instances, after the flaring head has bottomed-out, the outer
Note: To insure a proper flare, it is necessary that the expander edge of the flare may not be flat against the flange face. There
be centered when locked into the liner. Check this visually by may be a slight gap. This is a perfectly normal condition and
removing the socket wrench and looking from the end of the not a cause for rejection.
support rod. If the expander is not centered, loosen it, center
and retighten. *Note: When flaring polypropylene, caution should be taken to not
force the head in too quickly by applying excessive torque to the
flaring wrench.

Flanged pipe assembly with expander in position

To prevent rotation of the rod while the expander adjusting nut Flanged pipe end, expander and flaring head.
is being tightened, hold it by means of the pin punch provided
in the kit. The pin punch should be inserted into the small hole
at the end of the rod. (There is no hole in the rod of the 1”
expander. Instead, the end of the rod has parallel flat surfaces
which can be held with a wrench or pliers.)

Three extension pipes are supplied with the kit. One of the
two smaller diameter pipes is supplied for placement over the
handle of the pin punch to develop additional leverage, when
needed. With PTFE liners, use of the pin punch extension is
optional, but with PVDF & PP in 3” and larger sizes, use is
desirable. (The second of the two smaller pipes is used in the
handle of the socket wrench when flaring pipe liners 11/2” thru

5

STEP 10 GENERAL NOTES

After flaring Heavy Duty PTFE, PVDF, ETFE, and PP, EXPANDER LUBRICATION: The two nuts used to
immediately quench the flare with water. Leave the flaring expand the rubber discs or the steel gripping segments
head and the expander in place until the flare has cooled to (depending upon expander style) and to drive the flaring
100ºF or lower. Then disassemble and remove the flaring head should be kept lubricated with a high temperature
head and the expander. A protective cover should be lubricant such as Fel-Pro* C5-A thread lubricant included
immediately installed on the flared face and should in the field flaring kit.
remain on the assembly during handling and storage to
prevent damage or excessive springback of the flare. CARE OF RUBBER EXPANDER DISCS: Care must be
exercised to keep the rubber discs clean of lubricant to
After the flaring head has been removed, the flared liner may prevent slippage during flaring. When removing the
taper away from the flange face at a slight angle, or may expander from the finished pipe spool, completely loosen
have a slightly convex surface. However, when the flange is the expander to prevent the rubber discs from taking a
bolted into position at installation, the flared liner will be compression set.
pushed down snugly and provide a tight, leak-proof seal.
PROTECTION OF EXPANDER THREADS: Plastic or fiber
(REPEAT STEPS 7 THROUGH 10 FOR THE OTHER END tubes are provided to protect the expander threads when
OF THE PIPE) the expander is not in use. The tubes must be removed
prior to use of the expander and they should be replaced
after use to prevent lubricant from getting on the other
parts in the kit and also to prevent thread damage.

CARE OF FLARING HEADS: The flaring surfaces of the
flaring heads should be periodically inspected, cleaned
and polished to prevent “curl-back” of the liner during
flaring. A No. 320 emery cloth is recommended for
cleaning and polishing.

* Mfg. by Fel-Pro, 7450 N. McCormick Blvd., Skokie, Ill.

6

Part II Switch on the hot air gun. The 220 volt gun should be set
at its maximum setting. Rotate the gun slowly around the
Field Flaring of Heavy Duty plastic liner projecting beyond the pipe flange, making a full
PVDF, PP, and ETFE 360º sweep. Direct the hot air stream against the outer
surface of the tubing. Adjust the distance of the gun from
The procedures for field flaring Heavy Duty PVDF, PP, & the tubing so that the breadth of the air stream just includes
ETFE are the same as those described for PTFE in Part 1, the outer surface of the tubing, and a minimum of air strikes
with the following additional requirements. the inner surface of the tubing. While the gun is being
rotated around the liner, the operator should periodically
1. With PVDF & PP liners in pipe size 3” and larger, an press on the projecting liner with the thumb or fingers of
extension pipe must be used on the pin punch when his/her free hand which should be protected by heat
tightening the expander. With PTFE, PVDF, ETFE, and PP resistant gloves. Initially the plastic will be stiff with no “give.”
liners in pipe sizes 11⁄2” through 2”, use of the extension bar As the heating of the plastic continues, the material will
is optional, but with PVDF, ETFE, & PP liners in 3” and larger begin to soften. When the operator feels the plastic just
size pipe, it is absolutely essential because of the heavier, start to “give,” he should shut off the gun (see note
more rigid wall. Use of the pin punch extension is discussed pertaining to cooling of hot air gun, below), lay it on a dry
in Step 7, Part 1. fireproof surface and then proceed with the flaring operation
as explained in Step 9, Part I. It is important that the
2. It is recommended that flaring heads be lubricated when preheating be stopped when the plastic just begins to
flaring PVDF (See Step 8A). “give.” It should not be over heated. (As noted in Step 10,
Part I, as soon as the flaring head has bottomed out and
3. The projecting ends of the PVDF, ETFE, & PP liner must the flaring head socket wrench given 1/4 additional turn, the
be preheated prior to flaring (See Step 9A). The purpose of flaring head and pipe end should be quenched with water.)
preheating the ends of the liner is to reduce the temperature
to which the flaring head must be heated. This prevents Notes Pertaining to Hot Air Guns:
overheating the plastic and ensures that the flare will have
full strength and be free of unnecessary stresses. SAFETY PRECAUTIONS: Although the 220 volt gun is double
insulated, normal safety precautions must still be observed to
STEP 8A prevent shock. Quenching with water should be done away from the
Prior to heating the flaring head, lubricate the face by wiping area where the heat gun is used. When there is any question as to
on a thin film of any commercial grade machine lubricating safety of operating personnel, USE OF A GROUND FAULT
oil. This is necessary with PVDF to prevent its sticking to the INTERRUPTER DEVICE IS PRESCRIBED.
flaring head. The use of this oil is not required when flaring
polypropylene, and may result in unsatisfactory flares if used COOLING OF HOT AIR GUN: With the 220 volt gun, although it may
with PTFE. Prior to flaring PTFE, clean the head with solvent. be turned “off” immediately, it is preferable to cool the heater
element first by turning the dial setting from maximum to 0, allowing
STEP 9A the blower to run until the heater element is cool, and then to switch
Preheating of the end of the PVDF, ETFE, & PP liner which it “off.” These precautions will prolong the life of the heater elements
will form the flare, is accomplished using a hot air gun as in the heat gun.
shown in the diagram below.

The information contained herein is provided only as a
guide for the fabrication instructions for Resistoflex
Products and it does not constitute an express warranty
of any kind.

7

Prescribed Temperatures, Equipment Settings and Approximate Flaring Head Heating Times

PIPE NOMINAL PRESCRIBED PROPANE GAS STOVE HOT PLATE WITH HOT PLATE WITH 220 VOLT
LINER PIPE FLARING (R25750-GS) FIXED SETTINGS VARIABLE SETTINGS HEAT GUN
MATERIAL SIZE HEAD (R29050-HG)
AND TEMP (R25750-HDP) (R25750-LHP) FOR LINER PREHEAT
TYPE (INCHES) HD PVDF & PP & PVDF HD PVDF & PP & ETFE
ŒŽ APPROX.
APPROX. REGULATOR HEATING APPROX. APPROX. DIAL APPROX.
ºF ºC HEATING SETTING HEATING HOT PLATE SETTING TIME (MIN.)
TIME TO PREHEAT
290 143 TIME psi kg cm2 TIME TEMP.
290 143 (MIN.) (MIN.)  LINER ‘
290 143 3 0.2 (MIN.)  SETTING 
290 143 1.5 3 0.2 SETTING H
HEAVY 1 290 143 2 3 0.2 16 290 MAXIMUM 3⁄4
DUTY 11⁄2 290 143 2 3 0.2 2 18 290 SETTING 1
290 143 5 0.4 2.5 19 290 11⁄2
PP 2 2.5 15 1.0 38 290 MAXIMUM 2
3 270 130 3 15 1.0 3 45 290 SETTING 3
HEAVY 4 270 130 4 4 70 290 4
DUTY 6 270 130 5 3 0.2 4.5 75 290 5
PVDF 8 270 130 3 0.2 13
270 130 2 3 0.2 15 15 270 1
HEAVY 1 270 130 2 3 0.2 17 270 1
DUTY 11⁄2 270 130 2 5 0.4 2 28 270 1
PTFE 2 15 1.0 2 33 270 1
2 740 390 3 15 1.0 2 38 270 2
3 740 390 4 2 87 270 3
4 740 390 4 3 0.2 3 89 270 4
6 740 390 3 0.2 7
8 740 390 6 3 0.2 9 NOT RECOMMENDED
740 390 6 3 0.2 DUE TO EXTENDED
1 740 390 7 5 0.4 13 HEATING TIMES.
11⁄2 9 15 1.0 14 USE R25750-GS
11 15 1.0 16 or R25750-HDP
2 14 22
3 18 36
4 72
6 154
8

NOTES: are based on the use of an insulating blanket on top of the
flaring head and use of a hot plate which has been stabilized
Œ. ALLOWABLE TEMPERATURE VARIATION: In order to at the prescribed temperature for at least one-half hour.

achieve the full performance capabilities of the finished field . CALIBRATION OF INFINITELY VARIABLE HOT PLATE:
flare piping assembly, it is essential to heat the flaring head
to the exact temperature indicated in the table. A variation of Dial readings on the infinitely variable hot plates are not
no more than plus or minus 10ºF (5ºC) from the prescribed necessarily accurate. When initially using the hot plate, it
temperature is allowable. should be first preheated with the dial set at 270ºF. A flaring
head should then be placed on the hot plate with the stem
. FLARING HEAD TEMPERATURE INDICATION: of a thermometer placed into the hole in the head. After the
temperature of the head has been allowed to stabilize, the
With smaller size flaring heads, the thermometer reading may thermometer reading should be observed. If it is not 270ºF,
lag behind the actual head temperature. Consequently, the the dial setting should be increased or decreased
thermometer reading may continue to rise even after the accordingly and the temperature again allowed to stabilize.
head has been removed from the electric hot plate or after The temperature reading of the thermometer should again
the flame of the gas stove has been cut off. To determine be observed. If it is not 270ºF, another adjustment of the dial
whether this has occurred, the thermometer reading should should be made. This should be continued until the head
be observed for several seconds. If the temperature attains a stabilized temperature of 270ºF. A mark should
continues to rise above the prescribed flaring temperature, then be made on the temperature dial under the temperature
the head should be allowed to cool to the prescribed index. Thereafter the temperature index can be set at the
temperature before flaring. (Temperature lag when the head mark and the head should stabilize at 270ºF. This calibration
is cooling can be ignored.) should be checked periodically to verify its correctness.

Ž. THERMOMETER CALIBRATION: Thermometers used to ‘. APPROXIMATE PREHEATING TIMES WITH PVDF & PP:

determine flaring head temperature should be checked The times indicated are offered only as a guide for work
regularly for accuracy. This can be done by immersing the scheduling. Actual heating times can vary considerably from
stem of the thermometer in boiling water to a depth of 11⁄2 those shown. Proper preheating should be determined by
inches (38mm). That is the same depth which the stem is periodically pressing the end of the liner being heated until
inserted into the flaring head when in use. The dial should the required degree of “give” has been achieved.
read 212ºF (100ºC). If it does not, the adjusting screw on
the thermometer should be turned until the dial does read All times shown above are approximate and offered only
212ºF. If the dial reading cannot be brought into adjustment, as a guide to scheduling. Actual heating time may vary.
the thermometer should be replaced.

. HEATING TIMES WITH ELECTRIC HOT PLATES: For all

liner materials and types, the heating times given in the table

8

Dimensional Data Applicable to:

Heavy Duty Polypropylene
Lined FF Pipe

With Resistoflex Field Flare Flanges (Ductile Iron Socket Flanges)
on Both Ends

NOMINAL C D P S
PIPE in. mm in. in.
SIZE 3⁄4 19 11⁄8 mm L+1 5⁄16 mm in. mm
(IN.) 7⁄8 22 11⁄4 29 L+1 1⁄2 L+33
1 1 25 13⁄8 32 L+1 3⁄4 L+38 L-7⁄8 L-22
11⁄4 32 15⁄8 35 L+2 3⁄16 L+44
11⁄2 13⁄8 35 13⁄4 41 L+2 7⁄16 L+56 L-15⁄16 L-24
13⁄8 35 13⁄4 44 L+2 7⁄16 L+62
2 11⁄2 38 17⁄8 44 L+2 5⁄8 L+62 L-1 L-25
48 L+67
3 L-1 L-25

4 L-1 L-25

6 L-1 L-25
8 L-11⁄16 L-27

Note: Dimensions are accurate to within 1/16" (2mm).

9

Dimensional Data Applicable to:

Heavy Duty Polypropylene
Lined FV Pipe

With Factory Flared Lap Joint Flange on One End and Resistoflex
Field Flare Flange (Ductile Iron Socket Threaded Flange) on the
Other End

11⁄32

NOMINAL C D P SFV
PIPE in. in. in.
SIZE 3⁄4 mm 11⁄8 mm L+11⁄16 mm in. mm
(IN.) 7⁄8 19 11⁄4 29 L+3⁄4 L+17
1 1 22 13⁄8 32 L+7⁄8 L+19 L-17⁄32 L-13
11⁄4 25 15⁄8 35 L+11⁄8 L+22
11⁄2 13⁄8 32 13⁄4 41 L+13⁄16 L+29 L-19⁄32 L-15
13⁄8 35 13⁄4 44 L+13⁄16 L+30 L-5⁄8 L-16
2 11⁄2 35 17⁄8 44 L+15⁄16 L+30 L-11⁄16 L-17
38 48 L+33 L-11⁄16 L-17
3 L-11⁄16 L-17
L-123⁄32 L-18
4

6
8

Note: Dimensions are accurate to within 1/16" (2mm).

10

Dimensional Data Applicable to:

Heavy Duty Polypropylene
Lined VV Pipe

Made from FF or FV Lined Pipe
Field Flanged Pipe with Lap Joint Flanges on Both Ends

NOMINAL C P SV V A SVV + 2A
PIPE SIZE in. mm in.
3⁄4 19 in. mm in. mm 11⁄32 mm in. mm
(IN.) 7⁄8 22 1⁄2 9
1 25 L+115⁄16 L+33 L-3⁄16 L-5 5⁄8 13 L+9⁄16 L+14
1 11⁄4 32 L+11⁄2 L+38 L-1⁄4 L-6 23⁄32 16 L+7⁄8 L+22
11⁄2 13⁄8 35 L+111⁄16 L+43 L-5⁄16 L-8 13⁄16 19 L+11⁄8 L+29
2 13⁄8 35 L+23⁄16 L+56 L-5⁄16 L-8 — 21 L+111⁄32 L+34
11⁄2 38 L+27⁄16 L+62 L-5⁄16 L-8 — — L+17⁄16 L+37
3 L+27⁄16 L+62 L-5⁄16 L-8 — —
L+25⁄8 L+67 L-3⁄8 L-10 —
4
——
6

8

Note: 1. Dimensions are accurate to within 1/16" (2mm).
2. Radius from ID of steel pipe to face of pipe flare should be 1/4" in 1"-2", 5/16" in 3", and 3/8" in larger sizes. Polypropylene liner will
be flared against this radius so it must be round, smooth, burr free and clean.

11

Dimensional Data Applicable to:

Fluoropolymer Lined FF Pipe

With Resistoflex Field Flare Flanges (Ductile Iron Socket
Threaded Flanges) on Both Ends.

NOMINAL S P C D
PIPE in. in. in.
SIZE L-13⁄16 mm L+11⁄2 mm in. mm 15⁄32 mm
(IN.) L-13⁄16 L-21 L+15⁄8 L+38 17⁄32 30
1 L-13⁄16 L-21 L+21⁄8 L+41 13⁄16 21 115⁄32 31
L-13⁄16 L-21 L+21⁄8 L+54 7⁄8 22 115⁄32 38
11⁄2 L-7⁄8 L-21 L+25⁄16 L+54 11⁄8 29 119⁄32 38
L-15⁄16 L-22 L+23⁄4 L+59 11⁄8 29 127⁄32 41
2 L-15⁄16 L-24 L+27⁄8 L+70 11⁄4 32 129⁄32 47
L-11⁄16 L-24 L+23⁄4 L+73 11⁄2 38 129⁄32 49
3 L-27 L+70 19⁄16 40 49
19⁄16 40
4

6

8 HD PVDF
8 HD PTFE

Note: Through 6" size, dimensions are an average of both PVDF, PTFE, and ETFE.

12

Dimensional Data Applicable to:

Fluoropolymer Lined FV Pipe

With Factory Flared Lap Joint Flange on One End and Resistoflex
Field Flare Flange (Ductile Iron Socket Threaded Flange) on The
Other End.

NOMINAL SFV P C D
PIPE in. in. in.
SIZE L-1⁄2 mm L+3⁄4 mm in. mm 15⁄32 mm
(IN.) L-1⁄2 L-13 L+13⁄16 L+19 13⁄16 21 17⁄32 30
1 L-1⁄2 L-13 L+11⁄16 L+21 115⁄32 31
L-1⁄2 L-13 L+11⁄16 L+27 7⁄8 22 115⁄32 38
11⁄2 L-1⁄2 L-13 L+13⁄16 L+27 11⁄8 29 119⁄32 38
L-9⁄16 L-13 L+13⁄8 L+30 11⁄8 29 127⁄32 41
2 L-9⁄16 L-14 L+17⁄16 L+35 11⁄4 32 129⁄32 47
L-3⁄4 L-14 L+13⁄8 L+37 11⁄2 38 129⁄32 49
3 L-19 L+35 19⁄16 40 49
19⁄16 40
4

6

8 HD PVDF
8 HD PTFE

Note: Through 6" size, dimensions are an average of both PVDF, PTFE, and ETFE.

13

Dimensional Data Applicable to:

Fluoropolymer Lined VV Pipe

Made from FF or FV Lined Pipe
Field Flanged Pipe with Lap Joint Flanges on Both Ends

SV V = Flanged face to flanged face of steel pipe - (Schedule 40 only)
P = Length of Cut Plastic Liner
C = Cut length of plastic projecting beyond flange face
A = Additional length of steel required per steel flare, dimensioning as shown
SV V + 2A = cut length of steel pipe

NOMINAL A SV V SV V+2A C P
PIPE SIZE in.
in. mm in. mm in. mm 13⁄16 mm in. mm
(IN.) 7⁄8 21
11⁄32 9 L-1⁄8 L-3 L+9⁄16 L+14 11⁄8 22 L+11⁄2 L+38
1 1⁄2 13 L-1⁄8 L-3 L+7⁄8 L+22 11⁄8 29 L+15⁄8 L+41
5⁄8 16 L-1⁄8 L-3 L+11⁄8 L+29 11⁄4 29 L+21⁄8 L+54
11⁄2 23⁄32 19 L-1⁄8 L-3 L+111⁄32 L+34 32 L+21⁄8 L+54
13⁄16 21 L-3⁄16 L-5 L+17⁄16 L+37 L+2 5⁄16 L+59
2

3

4

Note: 1. Dimensions shown are an average of both PVDF, PTFE, and ETFE.
2. Radius from ID of steel pipe to face of pipe flare should be 1/4" in 1"-2", 5/16" in 3", and 3/8" in larger sizes. PTFE, PVDF, & ETFE
liner will be flared against this radius so it must be round, smooth, burr free and clean.

14

R29650M Universal Field Flare Kit for
PTFE, PVDF, ETFE, and PP (1"- 4")

FF A CC
BB
E JN O A AA
M Z
D G I V Y
C F L PR X
B
H
A
U

DD K T SQ

KEY* DESCRIPTION REQ’D. PART KEY* DESCRIPTION REQ’D. PART
NUMBER NUMBER
Q 11/2" DRIVE PLUG
A 1" EXPANDER 1 R29620-016-1 R 2" DRIVE PLUG 1 R28650-024-4
S 3" DRIVE PLUG 1 R28650-032-4
B 11/2" EXPANDER 1 R29620-024-1 T 4" DRIVE PLUG 1 R28650-048-4
U 1" T-WRENCH 1 R28650-064-4
C 2" EXPANDER 1 R29620-032-1 V 11/2" - 3" T-WRENCH 1 R28650-016-2
W 4" UP T-WRENCH 1 R25750-032-2
D 3" EXPANDER 1 R29620-048-1 X THERMOMETER 1 R25750-064-2
Y DRIVE PLUG HANDLE 1 R25750-T
E 4" EXPANDER 1 R29620-064-1 Z PIN PUNCH 1/4" (11/2" - 3") 2 R25750-5
AA PIN PUNCH 3/8" ( 4" UP) 1 R25750-PP-2
F 1" CUT-OFF RING 1 R29650-016-6 BB EXTENSION BAR (11/2"-3") 1 R25750-PP-3
CC EXTENSION BAR (4" UP) 2 R28650-29
G 11/2" CUT-OFF RING 1 R29650-024-6 DD THREAD COMPOUND 1 R28650-30
EE STORAGE BOX 1"- 4" 1 R25750-L
H 2" CUT-OFF RING 1 R29650-032-6 FF HIGH TEMPERATURE GLOVES 1 R25750-B
1 PR. R28760-G
I 3" CUT-OFF RING 1 R29650-048-6

J 4" CUT-OFF RING 1 R29650-064-6

K 1" FLARING HEAD 1 R29650-016-3

L 11/2" FLARING HEAD 1 R29650-024-3

M 2" FLARING HEAD 1 R29650-032-3

N 3" FLARING HEAD 1 R29650-048-3

O 4" FLARING HEAD 1 R29650-064-3

P 1" DRIVE PLUG 1 R28650-016-4

* Letters shown are key to illustration – not in part number or other reference

The information contained herein is provided only as a guide for the use of Resistoflex products and it does not constitute an express
warranty of any kind. Resistoflex specifically disclaims the implied warranty of merchantability and fitness for a particular purpose.

15

Crane Resisto ex Resisto ex (Asia) Pte. Ltd.
One Quality Way 16 Gul Link
Marion, NC 28752 Singapore 629484
Ph: (828) 724-4000 Tel: (65) 6863-1559
Fax: (828) 724-4783 Fax: (65) 6863-1560

www.resisto ex.com

FF-8U 9/98